Friends who have known jadeite must know that jadeite can be divided into a goods, B goods and even C and d goods. So what is jadeite a goods and B goods? How to distinguish them? The distinguishing criteria are described below:
1. Look at the luster: a goods have strong glass luster
When identifying jadeite A and B with the naked eye, first look at the luster of natural light. Generally, the luster of goods a is strong glass luster, while the light of goods B is mostly waxy, with poor luminosity and smoothness. The edges of B and C Jadeites often show weak blue purple light, which is the color of the reflected light of the filled organic colloid.
2. Look at the surface: the scratches or polishing lines on the surface of goods a are relatively orderly
Generally, you need to use a magnifying glass to see the surface, 10 times. The surface of jadeite A is generally smooth, especially an old jadeite; B. There are often continuous corrosion pits on the surface of goods. The corrosion structure on the surface of B goods is disordered, because the dissolution degree of various minerals in the jadeite jade is different in acid, and spider network acid corrosion lines are often formed on the surface; The scratches and polishing lines on the surface of a goods are relatively orderly, because the friction force is generally in one direction.
3. Look at the color: goods B and C can't see the color root
For colored jadeite, the feeling of goods B and C is that the color is unnatural, the color edge is often divergent, the color is floating, and the color root cannot be seen or is not obvious. The color of a goods is different, and there is a saying of 'strong color'.
4. Look at the weight: the density of a goods is high, and it feels like pressing hands
A-cargo jadeite is a natural jadeite with high density. You will feel pressure when holding it in your hand; B. C goods have been artificially corroded and filled with glue, the internal structure has been damaged, the natural density will decrease, and it is lighter to hold in your hand.
5. Listen to the sound: the sound of a goods is crisp and pleasant, with a metallic feeling
Hang the ornaments in the air with fine lines such as hair, and gently collide with agate or a-cargo jadeite, which will make a very melodious, Qingyuan and echo sound, with a crisp and pleasant sound and a metallic feeling; The sound of B goods is stuffy, not crisp, and there is no pleasant sound.
6. By touch: a goods have glass texture
Natural jadeite a goods have a cold glass texture. The Treated Jadeite B and C goods feel greasy.
For beginners, the above experience is very difficult to master and needs an accumulation process. Industry insiders said that the most accurate way to identify jadeite A and B goods is to go to an authoritative identification organization and use instruments for identification.
However, experts also said that in the actual purchase process, it is impossible to scientifically test every piece of jade. Therefore, it is very practical to master some simple naked eye identification methods of jadeite A and B goods.